Restructure vast status

[tobim]

No description provided.

[dominiklohmann]

First review round; this time code only. Still compiling on the side to give feedback to the output itself.

[dominiklohmann]

From a user POV, I've noticed a few things:

Things are no longer grouped by components. The output is much easier to parse if the info, verbose and debug objects are merged like this:

vast status -v debug | jq '.info * .debug * .verbose'

I think we should just do this by default. Having .info.archive and .debug.archive separated from each other makes no sense as a user.

For the components, the names are doubled as keys. In a future PR, I'd like to see a components: [...] array containing all the components, with components[<index>].name containing the name. Right now, <name>.name is always "<name>".

The helptext of vast status should show what unit the memory usage values are in.

[dominiklohmann]

Can you clean up the includes and the guarding #ifs in libvast/src/detail/process.cpp? There are some seemingly unnecessary includes, and they should be moved to the top.

We also shouldn't use both __linux__ and VAST_LINUX, only the latter should be used for guarding includes.

[dominiklohmann]

Thanks! 🙏

I verified locally that this looks as we discussed.